Transformer

Transformer

protected Transformer()

Default constructor is protected on purpose.

clearParameters

abstract fun clearParameters(): Unit

Clear all parameters set with setParameter.

getErrorListener

abstract fun getErrorListener(): ErrorListener!

Get the error event handler in effect for the transformation. Implementations must provide a default error listener.

getOutputProperties

abstract fun getOutputProperties(): Properties!

Get a copy of the output properties for the transformation.

The properties returned should contain properties set by the user, and properties set by the stylesheet, and these properties are "defaulted" by default properties specified by section 16 of the XSL Transformations (XSLT) W3C Recommendation. The properties that were specifically set by the user or the stylesheet should be in the base Properties list, while the XSLT default properties that were not specifically set should be the default Properties list. Thus, getOutputProperties().getProperty(String key) will obtain any property in that was set by setOutputProperty, setOutputProperties, in the stylesheet, or the default properties, while getOutputProperties().get(String key) will only retrieve properties that were explicitly set by setOutputProperty, setOutputProperties, or in the stylesheet.

Note that mutation of the Properties object returned will not effect the properties that the transformer contains.

If any of the argument keys are not recognized and are not namespace qualified, the property will be ignored and not returned. In other words the behavior is not orthogonal with setOutputProperties.

getOutputProperty

abstract fun getOutputProperty(name: String!): String!

Get an output property that is in effect for the transformer. The property specified may be a property that was set with setOutputProperty, or it may be a property specified in the stylesheet.

getParameter

abstract fun getParameter(name: String!): Any!

Get a parameter that was explicitly set with setParameter.

This method does not return a default parameter value, which cannot be determined until the node context is evaluated during the transformation process.

getURIResolver

abstract fun getURIResolver(): URIResolver!

Get an object that will be used to resolve URIs used in document().

reset

open fun reset(): Unit

Reset this Transformer to its original configuration.

Transformer is reset to the same state as when it was created with TransformerFactory#newTransformer(), TransformerFactory#newTransformer(Source source) or Templates#newTransformer(). reset() is designed to allow the reuse of existing Transformers thus saving resources associated with the creation of new Transformers.

The reset Transformer is not guaranteed to have the same URIResolver or ErrorListener Objects, e.g. Object#equals(Object obj). It is guaranteed to have a functionally equal URIResolver and ErrorListener.

setErrorListener

abstract fun setErrorListener(listener: ErrorListener!): Unit

Set the error event listener in effect for the transformation.

setOutputProperties

abstract fun setOutputProperties(oformat: Properties!): Unit

Set the output properties for the transformation. These properties will override properties set in the Templates with xsl:output.

If argument to this function is null, any properties previously set are removed, and the value will revert to the value defined in the templates object.

Pass a qualified property key name as a two-part string, the namespace URI enclosed in curly braces ({}), followed by the local name. If the name has a null URL, the String only contain the local name. An application can safely check for a non-null URI by testing to see if the first character of the name is a '{' character.

For example, if a URI and local name were obtained from an element defined with <xyz:foo xmlns:xyz="http://xyz.foo.com/yada/baz.html"/>, then the qualified name would be "{http://xyz.foo.com/yada/baz.html}foo". Note that no prefix is used.

setOutputProperty

abstract fun setOutputProperty(
    name: String!, 
    value: String!
): Unit

Set an output property that will be in effect for the transformation.

Pass a qualified property name as a two-part string, the namespace URI enclosed in curly braces ({}), followed by the local name. If the name has a null URL, the String only contain the local name. An application can safely check for a non-null URI by testing to see if the first character of the name is a '{' character.

For example, if a URI and local name were obtained from an element defined with <xyz:foo xmlns:xyz="http://xyz.foo.com/yada/baz.html"/>, then the qualified name would be "{http://xyz.foo.com/yada/baz.html}foo". Note that no prefix is used.

The Properties object that was passed to setOutputProperties won't be effected by calling this method.

setParameter

abstract fun setParameter(
    name: String!, 
    value: Any!
): Unit

Add a parameter for the transformation.

Pass a qualified name as a two-part string, the namespace URI enclosed in curly braces ({}), followed by the local name. If the name has a null URL, the String only contain the local name. An application can safely check for a non-null URI by testing to see if the first character of the name is a '{' character.

For example, if a URI and local name were obtained from an element defined with <xyz:foo xmlns:xyz="http://xyz.foo.com/yada/baz.html"/>, then the qualified name would be "{http://xyz.foo.com/yada/baz.html}foo". Note that no prefix is used.

setURIResolver

abstract fun setURIResolver(resolver: URIResolver!): Unit

Set an object that will be used to resolve URIs used in document().

If the resolver argument is null, the URIResolver value will be cleared and the transformer will no longer have a resolver.

transform

abstract fun transform(
    xmlSource: Source!, 
    outputTarget: Result!
): Unit

Transform the XML Source to a Result. Specific transformation behavior is determined by the settings of the TransformerFactory in effect when the Transformer was instantiated and any modifications made to the Transformer instance.

An empty Source is represented as an empty document as constructed by javax.xml.parsers.DocumentBuilder#newDocument(). The result of transforming an empty Source depends on the transformation behavior; it is not always an empty Result.